
//start p4 code 
function startCourse()
{
	// check to see if cookies is enabled, otherwise, this won't work
	if( typeof sessionStorage == "undefined" || sessionStorage.disabled )
	{
		alert( "You must enable cookies for this course to work properly." );
	}
	else
	{
		// if it is enabled, checked to see if this course was started
		// if it was not able to retrieve, the key "course_started", then
		// then this is the first time we are running the course
        if( !sessionStorage.getItem( "course_started" ) )
        {
        	// clear the session storage
            sessionStorage.clear();
            // set the "key" by giving it a value.  all values are strings!
    		sessionStorage.setItem( "course_started", "1" );
    		sessionStorage.setItem( "finland", "0" );
    		sessionStorage.setItem( "france", "0" );
    		sessionStorage.setItem( "gambia", "0" );
    		sessionStorage.setItem( "sudan", "0" );
    		
        }
	}
	
}
function visitFinland()
{
	sessionStorage.setItem( "finland", "visited" );
	showTest();
}

function visitFrance()
{
	sessionStorage.setItem( "france", "visited" );

	showTest();
}


function visitGambia()
{
	sessionStorage.setItem( "gambia", "visited" );

	showTest();
}

function visitSudan()
{
	sessionStorage.setItem( "sudan", "visited" );

	showTest();}

//this function will check to see if every page was visited
//if so, show the test link
function showTest()
{
	var finlandVisited = sessionStorage.getItem( "finland" );
	var franceVisited = sessionStorage.getItem( "france" );
	var gambiaVisited = sessionStorage.getItem( "gambia" );
	var sudanVisited = sessionStorage.getItem( "sudan" );
	if( finlandVisited == "visited" && franceVisited == "visited" &&
		gambiaVisited == "visited" && sudanVisited == "visited" )
	{
		document.getElementById( "test-link" ).style.display = "inline";
	}
	
}
